update..

roles/common/templates/usr/local/src/mailsystem/conf/install_update_dovecot.conf.j2

@@ -194,6 +194,11 @@ auth_mechanisms="plain login"
 
 # - Settings for quota warning sript
 # - 
+{% if dovecot_msg_language is defined and dovecot_msg_language %}
+msg_language="{{ dovecot_msg_language }}"
+{% else %}
+msg_language=
+{% endif %}
 {% if dovecot_from_address is defined and dovecot_from_address %}
 from_address="{{ dovecot_from_address }}"
 {% else %}